Process of seaming covers to sheet-metal vessels



(No Model.)

P. E. HEINIG. PROCESS OF SEAMING COVERS TOVSHEET METAL 'VESSELS."

No.-546,469. Patented Sept. 17, 1895.

wmvess5s: INVENTOR ANDREW B.GRMIAM.MUYO'UTNQWASKINGTDEliZ FREDERICK E. HEINIG, OFLOUISVILLE, KENTUCKY.

PROCESS'OF SEAiVIlNG COVERS TO SHEET-METAL VESSELS.

SPECIFICATION forming part of Letters Patent No. 546,469, dated September 17, 1895.

Application filed February 28, 1895. Serial No. 539,987. (No model.) 7

To all whom it may concern:

Be it known that I, FREDERICK E. HEINIG, of Louisville, in the county of Jefferson and State of Kentucky, have invented new and useful Improvements in Processes of Seamin g Covers to Sheet-Metal Vessels, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention consists in a new process of manufacturing sheet-metal articles; and it consists in the steps hereinafter more fully pointed out in the specification and particu larly referred to in the claim.

In the annexed drawings similar letters and numerals of reference denote corresponding parts in both views, in which- Figure 1 is a view of a sheet-metal vessel in the present instance a lard-pailwhich is provided with a cap or cover to be secured in position by my new process, and in Fig. 2 is shown an elevation of a machine for carrying out the process of sealing the top and affixing it in position ready for shipment.

In practice I first manufacture the vessels with inturned head 5 and provide the bead 3 single or double, as may be desircd,while the top or cover is made, as shown in cross-section in Fig. 1,with straight downturned flange 4, adapted to fit closely over the neck of the vessel 1.

The cover is placed in position on the body of the vessel, the clamping-collar F is placed in position to hold the flange 4, and the whole is placed in position on asuitable platform of any machine adapted to carry the operative parts herewith shown.

Having the parts in position, the formingrolls H are brought to bear upon the metal of the top with sufficient force to bend the same in to close the metal of the top in and around the head 5 of the body of the vessel, thus securely holding it in position to prevent displacement thereof. It is essential that the vessel be provided with the intruding head or its equivalent in order that the metal of the cover 2 may embrace the same, and in most instances I prefer to so construct the head that it will have an inclosed wire reinforce, as it thereby gains strength and at the same time provides a better stop to prevent accidental displacement of the cover after it is secured in its final position.

To prevent accidental swelling of the lower portion of the flange 4 while closing the metal of the top in upon the head, the clamping-collar is required, or some equivalent thereof must be substituted.

No claim is made in this application for the peculiar mechanism shown to carry out the improved process; but for a better understanding thereof the same is here described in brief.

Referring to the drawings, D is a spindle to hold the operative parts in a chuck or other clamping device.

E E are the arms of a two-part yoke carrying the pressure-rolls designed to hold the clamping-collar down to its work.

' H H are forming-rolls which bend the sheet metal down and under the head 5.

K is a thrust-block into which the inner ends of the levers H are held and by means of which the elevation of the inner ends of said levers is controlled in carrying out the process of sealing the vessel 1. Suitable compression-springs a a are provided, so that the working of the machine will be without u'nnecessary jars, and the operative parts are suitably connected together.

Having described the invention, what I claim as new, and desire to secure by Letters Patent, is

The herein described process consisting in first placing a flanged cover over the end of a vessel which has a beaded edge and then pressing down and outwardly the top surface of the cover within the margin of the flange beneath the head of the vessel substantially as described.

In testimony whereof I have hereunto signed my name, in the presence of two attesting witnesses, at Louisville, in the county of J efferson, in the State of Kentucky, this 15th day of December, 1894.

FREDERICK E. HEINIG.

Witnesses:

FREDERICK I-l. GIBBS, A. E. MUELLER. 

